FR2365799A1 - Procede d'essai de matiere aux ultrasons a l'aide d'un transducteur acoustique electrodynamique - Google Patents

Procede d'essai de matiere aux ultrasons a l'aide d'un transducteur acoustique electrodynamique

Info

Publication number
FR2365799A1
FR2365799A1 FR7729201A FR7729201A FR2365799A1 FR 2365799 A1 FR2365799 A1 FR 2365799A1 FR 7729201 A FR7729201 A FR 7729201A FR 7729201 A FR7729201 A FR 7729201A FR 2365799 A1 FR2365799 A1 FR 2365799A1
Authority
FR
France
Prior art keywords
test process
acoustic transducer
material test
ultrasonic material
electrodynamic acoustic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7729201A
Other languages
English (en)
Other versions
FR2365799B1 (fr
Inventor
Wolfgang Bottcher
Hermann-Josef Kopineck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoesch Werke AG
Original Assignee
Hoesch Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoesch Werke AG filed Critical Hoesch Werke AG
Publication of FR2365799A1 publication Critical patent/FR2365799A1/fr
Application granted granted Critical
Publication of FR2365799B1 publication Critical patent/FR2365799B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/27—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the material relative to a stationary sensor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02827—Elastic parameters, strength or force

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

Dans le procédé d'essai de matière non destructif aux ultrasons l'invention, la bobine pour la production du champ magnétique est excitée par un courant alternatif ou par un courant continu intermittent ou alternant et le dispositif d'essai est sollicité ou non en fonction de l'intensité de magnétisation de la bobine 14, c'est-à-dire qu'il est mis en circuit dès que la magnétisation a atteint une valeur prédéterminée et qu'il est mis hors circuit dès qu'une valeur de magnétisation prédéterminée est dépassée vers le bas.
FR7729201A 1976-09-28 1977-09-28 Procede d'essai de matiere aux ultrasons a l'aide d'un transducteur acoustique electrodynamique Granted FR2365799A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE762643601A DE2643601C3 (de) 1976-09-28 1976-09-28 Verfahren zur zerstörungsfreien Werkstoffprüfung mit Ultraschall unter Verwendung eines elektrodynamischen Schallwandlers

Publications (2)

Publication Number Publication Date
FR2365799A1 true FR2365799A1 (fr) 1978-04-21
FR2365799B1 FR2365799B1 (fr) 1982-07-09

Family

ID=5989032

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7729201A Granted FR2365799A1 (fr) 1976-09-28 1977-09-28 Procede d'essai de matiere aux ultrasons a l'aide d'un transducteur acoustique electrodynamique

Country Status (9)

Country Link
US (1) US4164873A (fr)
AT (1) AT379899B (fr)
BE (1) BE859039A (fr)
DE (1) DE2643601C3 (fr)
FR (1) FR2365799A1 (fr)
GB (1) GB1584050A (fr)
IT (1) IT1079776B (fr)
LU (1) LU78175A1 (fr)
NL (1) NL176494C (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE445614B (sv) * 1978-11-07 1986-07-07 Studsvik Energiteknik Ab Forfarande och anordning for sendning och mottagning av elektromagnetiskt alstrade och mottagna pulser av ultraljud, fremst vid oforstorande provning av elektriskt ledande material
SE445017B (sv) * 1978-11-07 1986-05-26 Studsvik Energiteknik Ab Forfarande och anordning for sendning och mottagning av elektromagnetiskt alstrade pulser av ultraljud vid oforstorande provning av elektriskt ledande material
JPS5631637A (en) * 1979-08-24 1981-03-31 Nippon Steel Corp Instrument unit of electromagnetic ultrasonic wave
DE2949256C2 (de) * 1979-12-07 1983-07-28 Hoesch Werke Ag, 4600 Dortmund Elektrodynamischer Schallwandler
DE3017389C2 (de) * 1980-05-07 1984-11-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Verfahren zum Erzeugen von Ultraschall
US4380931A (en) * 1981-04-23 1983-04-26 The United States Of America As Represented By The Secretary Of The Navy Apparatus and method for quantitative nondestructive wire testing
US4870623A (en) * 1983-06-27 1989-09-26 Cochlea Corporation System to recognize a geometry parameter of unknown object with continuous wave acoustic energy
US4576286A (en) * 1983-06-27 1986-03-18 Cochlea Corporation Parts sorting systems
DE3530525C2 (de) * 1985-08-27 1994-05-11 Foerster Inst Dr Friedrich Vorrichtung zur zerstörungsfreien Werkstoffprüfung
GB8907613D0 (en) * 1989-04-05 1989-05-17 Bicc Plc Mineral insulated cable manufacture
US5467655A (en) * 1991-03-27 1995-11-21 Nippon Steel Corporation Method for measuring properties of cold rolled thin steel sheet and apparatus therefor
US6742392B2 (en) * 2002-10-29 2004-06-01 General Electric Company Method and apparatus for inducing ultrasonic waves into railroad rails
DE102004054423B3 (de) * 2004-11-10 2006-05-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung zur Materialprüfung und/oder Dickenmessung an einem wenigstens elektrisch leitende und ferromagnetische Materialanteile aufweisenden Prüfobjekt

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384767A (en) * 1964-05-11 1968-05-21 Stanford Research Inst Ultrasonic transducer
US3583213A (en) * 1968-07-26 1971-06-08 James R Houck Nondestructive testing of conductive objects using ultrasonic waves
US3850028A (en) * 1972-11-16 1974-11-26 Rockwell International Corp Method for ultrasonic inspection
FR2245251A5 (en) * 1973-09-25 1975-04-18 Inst Introskopii Non-destructive ultrasonic tester of workpieces - has electrically conductive surface for quality control and thickness measurement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384767A (en) * 1964-05-11 1968-05-21 Stanford Research Inst Ultrasonic transducer
US3583213A (en) * 1968-07-26 1971-06-08 James R Houck Nondestructive testing of conductive objects using ultrasonic waves
US3850028A (en) * 1972-11-16 1974-11-26 Rockwell International Corp Method for ultrasonic inspection
FR2245251A5 (en) * 1973-09-25 1975-04-18 Inst Introskopii Non-destructive ultrasonic tester of workpieces - has electrically conductive surface for quality control and thickness measurement

Also Published As

Publication number Publication date
NL176494C (nl) 1985-04-16
NL7710458A (nl) 1978-03-30
FR2365799B1 (fr) 1982-07-09
GB1584050A (en) 1981-02-04
LU78175A1 (fr) 1978-01-24
US4164873A (en) 1979-08-21
AT379899B (de) 1986-03-10
ATA484077A (de) 1985-07-15
DE2643601B2 (de) 1978-07-13
IT1079776B (it) 1985-05-13
DE2643601A1 (de) 1978-03-30
NL176494B (nl) 1984-11-16
DE2643601C3 (de) 1979-03-08
BE859039A (fr) 1978-03-28

Similar Documents

Publication Publication Date Title
KR940007527A (ko) 컴퓨터화된 자기공명분석기
BE859039A (fr) Procede d'essai de matiere aux ultra-sons a l'aide d'un transducteur acoustique electrodynamique
US3805224A (en) Method and apparatus for monitoring biological activity
GB1184912A (en) Magnetic Inspection method and means
GB1178645A (en) Ultrasonic Cleaning Apparatus
GB1328662A (en) Method of cleaning a flexible web and apparatus therefor
US2312042A (en) Electric circuit for photoelectric engraving machines
US3191430A (en) Testing means used in determining the presence of loose particles within a container
BE761886A (fr) Procede et appareil pour l'obtention d'une temperature approximativement constante au cours de l'assemblage de pieces moulees en matieres synthetiques
JPS55116291A (en) Electronic wrist watch with alarm
FR2406830A1 (fr) Procede et appareil de mesure pour la determination des caracteristiques electroacoustiques des bandes magnetiques
ES537667A0 (es) Aparato para tarar la salida de un transductor que produce una senal de salida electrica y dispositivo de vigilancia para maquinas herramientas automatizadas.
SU1170286A1 (ru) Способ регистрации механических импульсов и волн в воде
GB1116393A (en) Device for preparing emulsions of hydrophobic liquids, for example of flotation reagents
US1778985A (en) Electric appliance for the measuring of the acuteness of hearing
SU363911A1 (ru) УСТРОЙСТВО дл УЛЬТРАЗВУКОВОЙ ДЕФЕКТОСКОПИИ
JPS5432346A (en) Measuring apparatus of thickness deviation of metal pipes by electromagnetic ultrasonic waves
GB1192042A (en) Method and Means for Processing Tissue
SU381873A1 (ru) УСТРОЙСТВО дл ИЗМЕРЕНИЯ ПАРАМЕТРОВ ИЗДЕЛИЙ ИЗ ФЕРРОМАГНИТНЫХ МАТЕРИАЛОВ
SU40890A1 (ru) Устройство дл измерени рассто ний при подводной звуковой сигнализации, в частности дл измерени глубины мор
SU511548A1 (ru) Прибор дл записи процесса контракции цементов
SU583101A1 (ru) Устройство дл очистки датчиков контрол технологических параметров при обработке сточных вод
SU46376A1 (ru) Устройство дл искровой записи звука на непрозрачной электроизолирующей лете
SU148566A1 (ru) Способ определени начала повреждени подшипников по по влению в смазке металлических частиц - продуктов повреждени
SU391913A1 (ru) Устройство для ультразвуковой сварки

Legal Events

Date Code Title Description
ST Notification of lapse